SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : Ascend Communications (ASND)
ASND 212.33+1.1%Nov 28 9:30 AM EST
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  
To: Pullin-GS who wrote (28555)12/22/1997 5:14:00 PM
From: The Phoenix  Read Replies (1) of 61433
 
Paul,

Thanks for the URL. I found that interesting. It appears however to be written with a somewhat IP bendm which is fine. I think generally speaking the definitions are right...it just depends on how you apply them.

<<ATM is Connection oriented...Not connection-less. Not
<<neccessariliy.

ATM is always connection oriented. That is before information is transferred from the terminal into the network, a logical/virtual connection set-up phase must first allow the network to do the reservation of the necessary resources, if they are available. If no sufficient resources are available the connection is refused to the requesting terminal (as may happen with UBR traffic). When the information transfer phase is finished, the resources are released. This "connection-oriented" mode of operation allows the network to guarantee in all cases a minimal cell loss ratio and thus maximal quality. Every "call set-up" checks whether statistically enough resources are available. Ths assures that it can be guaranteed resources will be available and queue overflow will only occur with a very low probability. The probability of overflow can be dimensioned by gueuing theory. Tyipcal values are between 10 -8 and 10 -12 as far as the probability of losing a packet.

Note that IP is connectionless.... That is there is no estabilshment of a connection. If resources are not available...well..tough. You lose the packet. This is part of RSVP (resource reservation protocol).

Check sources like:
Asynchronous Tranfer Mode by Marin De Prycker, 1995
ATM Forum; atmforum.com

Gary
Report TOU ViolationShare This Post
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  

HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2025 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News